When I look at the source for that page, there are no Open Graph tags present, so JFBConnect is skipping the component properly. If you see an image and description when sharing the page in Facebook, they'll try to make a reasonable guess at the image and description to display. If not explicitly set, FB will use an image of appropriate size from your page and your meta description as the text.
If you want to use JFBConnect to set these tags, you have a few options
described here
. We don't have a specific Open Graph plugin for JoomDonation, so you'll have to add our SCOpenGraph easy-tags to the page:
[code]{SCOpenGraph og:image=http://yoursite/full/path/to/image.png} {SCOpenGraph og:description=Test Description Here}
-Melissa